Electric arc monitoring systems
US6747459B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2001 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Dec 13, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/086
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Electric arc monitoring is effected by exploiting the discovery that electric arcs are fractal phenomena in that all essential information that signifies an “arc” is contained in each fractal subset. The fractal subsets are logarithmically distributed over the arc spectrum. Monitoring of arcs is most advantageously effected on a fractal subset of low logarithmic order where the amplitude is higher pursuant to the 1/f characteristic of electric arcs, where cross-induction among neighboring circuits is lower, and where travel between the arc and the arc signature pickup is longer that at the high frequency customary for electric arc detection. Fractal subset information reduces the danger of false alarms. Arc signature portions may be processed in out of phase paths or treated as modulated carriers for monitoring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.